In Greek mythology, Iris is the personification of the rainbow and messenger of the gods. As the sun unites Earth and heaven, Iris links the gods to humanity. She travels with the speed of wind from one end of the world to the other. Iris is the daughter of Thaumas and the air nymph Electra. Her sisters are the Harpies; Aello, Celaeno and Ocypete. It is the messenger of Hera in particular.

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It really does not appear in the movie or animated series, only has a small appearance in the segment of the Disney movie of 1940, Fantasia.